Bird feeder



FIG. 1 is a front view of a bird feeder, the rear view being identical;

FIG. 2 is a side view of the bird feeder, the opposite side view being a mirror image thereof; and,

FIG. 3 is a bottom view thereof.

The elements depicted in broken line are not claimed. 

I claim the ornamental design for a bird feeder, as shown and described. 